Brother MFC-9420CN Service Manual page 337

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APPENDIX 4. FIRMWARE SWITCHES (WSW)

This appendix describes the functions of the firmware switches, which can be divided into two

groups: one is for customizing preferences designed for the shipping destination (as described

3) and the other is for modifying preferences that match the machine to the

environmental conditions. Use the latter group if the machine malfunctions due to mismatching.

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